Perk 7 schedule

Does anyone know if there is a schedule for extra perk? Say it was released on a Monday, will the next week be Tuesday and the week after wednesday?

Bigger 7 is issued on Monday (you need 300,000 or more) lesser required ones usually Tuesday. This week it’s Wednesday and nothing.

I understand that. What I’m trying to figure out if we get 7 on a Monday 1week, then we will get 7 on the next tuesday?